Plane attachment



Sept. 9, 1924.

.1. AHLEN PLANE ATTACHMENT Filed March 18. 1924 abrozmqf Patented Sept.9, 1924.

' JOHN .AHLEN, or:rnnsa lvonrneon cornr v PLANE ATTACHMENT.

Application fileda'z March 1a, 1924.. SeriallTo 700,119

Ta all zlglzom zltmay-concern. I Belt known that-LJO N A LEN, acitizenrofthe United States, residing at Fargo,- in..the.county=of1Cassand. State of. North -Da kfotafv have invented certain new and usefulImprovements; in;- a. Plane. Attaclr ment, of which the following is aspecification. I e

This invention relates toewood worki-n tools, and the primary objectofthis invention-:isto iprovide a: plane having novelmeansfOrqli-ftingthe blade or; iron thereofabove the worlo upon thereturn movement of thep lane,thereby preventing undue wear 2 uponztheblade and-the necessity for raising;the;whole plane above the workon-the back i stroke, thus 1 permitting the smooth operation offtheplane andwthe relieving of the user ofthe plane.- from undue exertion. VA .-fur-tl1,er; obj ect; of 5 the invention 1 is to prov-idea shoe,carriedrby theplane in, such a,,mannerthat. theblade on; iron of theplane-"willibespaced from the work on the backstroke of-the "plane, andwhen the. plane is in7;"tr-position of rest, thereby: preventing injuryto the blade and; the marring; of the objectupon, which the plane islaid. I

A further object of the invention is to provide a double faced shoepivotally carried by the plane which is normally urged into an operativeposition, so that the same will always be in work engaging positionwithout any attention of the user of the plane. v a

A still further object is to provide are-,

- versible pivoted shoe carried by a plane for the above describedpurpose, which will be durable and eflicient in use,one that will besimple and easy to manufacture, and one which can be easily associatedwith any type of plane.

WVith these and other objects in view, the invention consists in thenovel construction, arrangement and formation of parts, as will behereinafter more specifically described,

claimed and illustrated in the accompanying drawings, forming a part ofthis specification, in which:

Figure 1 is a side elevation of a plane,

partly in section, showing the improved device incorporated therewithand in position for holding thev blade or iron of the spaced from thework. v

Figure 2 is a fragmentary plan View of the plane partly in section,showing the improved device incorporated therewith.

plane Fi gnlrev 3 is, a fragmentary side elevation of thev planepartlyin section, showing the improved device incorporated. therewith,-andinan inoperativepositions I I Referring to the, drawing,whereinsimilar reference characters designate; corresponding partsthroughout 1 the 1 several views, the letter A indicates aipla-nel and'B the improved ,blade spacing device-1 therefor.

The plane Ais oftheusual on any; p113- ferred. construction. andysty le,and includes,- the; stock 5 the handles 6 and 7, blade hold ing andadjusting means 8,- and the blade or iron 9, The stock5 isprovidedwithuafl transversely extending ,slot:' 10, forwardly of ,thetransverse center thereof, and'wpreferably directly below the b'ladeholding, and: adjusting means ,8. As shown thesto'ck 5' is madeofllmetal; and is provided with the upturned side flanges 11. j v

The improved bladetraising deviceg'B-in eludes ashoelQ, which isadapted-toextend transversely of the stock 5.. This shoe; 12in:

eludes the shank 13 and theroam .platellas This plate 14 is curved.transversely as-elearings, and e extends outwardly from1the,-op.

the flanges 11. If so desired, one of the re duced ends of the pivot pinor stub shaft may be threaded into one of the openings 17, while theopposite end may be] provided with a screw head The cam 1 face 14 isadapted to normally extend through the slot 10, and the rear wall ofthis slot is curved as at 18, to conform'to the curvature of the activeface of the cam, while the opposite wall of the slot may terminateabruptly as at 19, for forming a stop for the forward edge of the camplate.

In order to insure that the shoe will. be normally held in an operativeposition, the spring 20 is provided. This spring 20 is coiled around thestub shaft or pivot pin 16 adjacent to the terminals thereof, and hasits intermediate portions bearing against the shank 13 of the shoe atits terminals bearing against the stationary portion of the stock 5, asindicated by the numeral 21.

In use of the improved plane, it can be seen that upon forward orworking stroke of the plane, the shoe 12 will beforced upwardly againstthe tension of the spring into the slot 10 and out of the way of thework. Thus permitting the ironor blade 9 to engage the work. Upon theback or return stroke of the plane, however, the shoe will ride belowthe lower surface of the stock of the plane and engage the face of thework,

and thus hold the active face of the blade above the work and thusprevent injury or undue wear thereon.

It can be seen that when the plane is laid upon an object, the shoe willbe in operative position below the lower face of the stock 5, and thushold the blade, or iron 9 above the object. Owing to the position of theshoe forwardly of the transverse center of the shoe, the plane will restupon the rear edge of the stock and on the shoe 12, and thus absolutelyprevent the blade from engaging the object and injuring the same. i

In case one face or edge of the cam surface s 14 of the shoe 12 becomesbroken or mutilated, it is merely necessary to remove the stub shaft orpin 16 and reverse the position of the shoe in the plane and replace thepin or stub shaft 16. This will present the new or unused edge of theshoe to the work.

From the foregoing description, it can be seen that an exceptionallysimple and automatic device has been provided for holding the slot, apivot pin detac iably carried by the side walls of the stock positionedin the hinged barrel, and a spring coiled around said pivot pin and,arranged to engage the shoe and the stock. 7

2. In a plane, the combination with a stock including a sole and sidewalls, the sole having a transverse slot therein, and a blade, of anattachment for normally holding the blade above the work when the planeis moved in one direction and when in position of rest comprising a camplate disposed transversely across the stock for projecting through theslot, saidplate being curved transversely, a shank formedlongitudinally;

of the plate and disposed intermediate the longitudinal edges thereof,-a hinged barrel formed on the upper edge of the shank, the side wallshaving openings formed therein and attached in advance of said slot, anda hinged pin extending through said openings and the hinged barrel.

i JOHN AHLEN.

